Probe positioning device and probe positioning method for flow field measurement

Abstract

The invention relates to a probe positioning device and method for flow field measurement. The probe positioning device comprises a probing rod, a moving unit, a locking unit and a position recording unit. One end of the probing rod is used for being connected with a probe for flow field measurement, and the moving unit is connected with one end, not connected with the probe, of the probing rod, and used for pushing the probing rod to move. The locking unit is arranged on the moving unit and used for limiting swing of the probing rod. The position recording unit is arranged on the moving unit or the probing rod and used for recording the moving position of the probe. The probe positioning device can enable the probe to freely change the position in a flow field, accurately determine the position of the probe in the flow field, and greatly improve accuracy and efficiency of measurement for speed, density and the like of fluid in the flow field.

Description

technical field [0001] The invention belongs to the field of measurement, and relates to a probe positioning device and a probe positioning method for flow field measurement. Background technique [0002] The distribution law of flow velocity, flow direction, pressure, temperature and concentration of fluid in the flow field is the key parameter for analyzing the law of fluid dynamics, and it is the basis for understanding the mechanism of mass transfer and heat transfer of fluid flow and reaction process. , The optimization of reactor structural parameters and operating parameters is of great significance. [0003] At present, there are many methods for measuring the flow direction of the fluid in the flow field and the spatial distribution of the fluid flow velocity, static pressure and concentration. One of them is the probe method, that is, a probe connected with a data acquisition and processing instrument is inserted into the flow field space to measure multiple point...

AI Technical Summary

Problems solved by technology

Usually, in order to enable the probe to reach each required measurement position while minimizing the impact on the flow field, the ratio of the length to the diameter of the probe rod is often large. When the angle between the direction of motion of the probe rod and the central axis of the probe rod is not zero °, the probe rod is susceptible to shear force and causes the position to shift, causing the position of the probe or sampler to be incorrect, resulting in a deviation in the measurement position, so that it is impossible to accurately locate the position of the probe or sampler in the flow field space. Lead to excessive measurement error or even wrong results

In addition, in the traditional measurement method, since the probe rod can only move along the direction of the probe rod, but cannot move freely in other directions to change its position, it is impossible to measure the measurement points in the entire flow field space

Images